Stapling device



March 13, 1951 M. E. WAMPLER STAPLING DEVICE n 5 Sheets-Sheet l FiledDeo. 26, 1945 lllllll ilk K- lll arch 13, 1951 M. E. WAMPLER 2,545,397

u STAPLING DEVICE Filed Dec. 26, y 1945 f 5 Sheets-Sheet 2 IN VEN TOR.

www@ E www www M. E. WAMPLER March 13., 195i STAPLING DEVICE 3Sheets-Sheet 5 Filed Dec. 26, 1945 y [N VEN TOR. mamy@ i www PatentedMar. 13, V11951 UNITED STATES TENT OFFICE l STAPLING DEVICE Melville E.Wampler, Chicago, Ill.

Application December 26, 1945, Serial No. 637,204

9 Claims.

The present invention relates to a stapling de:- vice, or the like, andmore particularly to a staple machine adapted for o'ice use.

One object of the invention is to provide a stapling device having amagazine which is pivotally secured so that it may be easily swung awayfrom the staple driving mechanism to clear bad staples.

Another object is to provide mechanism for removably locking themagazine in operative position relative to the staple driving mechanism.

A further object is to provide mechanism for removably securing the baseto the stapling head. Still another object is to; provide novel springmeans for urging the staples forwardly in the magazine. into positionfor operation .of the staple driving blade.

Yet another object is to provide a novel staple driving mechanism forreciprocably operating a staple driving blade in combination with springmeans for returning the driving blade to initial position.

A still further object is to pro-vide an anvil arF rangement on the baseof the staple which has a plurality of grooves adapted for diierenttypes of staples. Y

Other and further objects and .advantages .or the present inventionkwill be apparent fron-r the following description thereof, and. from theclaims appended thereto.

In the drawing. wherein like numerals refer to like or .correspondingparts throughout the several Views,

Figure l. depicts a side elevation, partly in section, and with partsbroken away,- of the stapling device embodying` the features of thisinvention,

Figure 2 is a longitudinal .vertical section of the stapling device,shown in Figure l, depicting the staple driving mechanism operatingupon. a piece of paper,

46 Figure 3 is a sectional View taken alongthe line 3-.3 .of Figure 1,in the'direction of the arrowsY Figure 4 is va sectional View taken.along the' line 4 4 of Figure 1; in. the direction of the` arrows,

Figure 5 is a sectional View taken along` the line 5.-5 of Figure 1, inthe direction 4of the arrows,

Figure 6 is a sectional View taken along the line 6-6 of Figure 1, inthe 4direction of the are' 50 rows,

Figure 7 is a sectional view taken along the line 1-1 of Figure 1, inthe direction of the ar'- rows, l

Figure 8` is a longitudinal vertical section of' the top piece of thestapling arm,

.. grooved -at 26 to'receive staples, .or the like;

Figure 9 is a longitudinal vertical section of the central casing of thestapling device, showing the staple magazine in partially .disengagedposition,

Figure 10 is a sectional view of the staplepusher means, and

Figure 1l is a longitudinal vertical section of the base of the staplingdevice.

Referring. to the drawing, and more particularly to. Figures l and 2,the numeral 2t generally represents the base plate of the staplingInachine, which is rectangular in cross-section, and preferably made ofsheet steel, or the like. Ou the base 2li are mounted two ears 2|, inspaced apart relation, having a pin v22 anchored therein'.

3. A` spring band. 23' is disposed between the metal ears 2l and'issecured to the base. in any sui-table manner such as` by nut and bolt 24,

A hexagonal anvil element 25 is disposed on the forward portion of thebase and is suitably A spring member 2l is mounted on the underside ofthe base 20 and engages the hexagonal anvil member to prevent itsturning out of position. It desired, each of thehexagonal faces of theanvil. member 25A `can. be grooved in a different way, so as toadaptvvthe said anvil for dierent types of staples, Depending upon theparticular type of staple employed, thel hexagonal anvil element can berotated to bring the proper grooved surface into operati-ve position.

As better shown in Figure 9, the stapling head comprises a. centralhollow casing 2.8'. 0f rectangular cross-section, provided with aninternal.- lv disposed bracing member 29 which extends subfvstantiallythe length of the casing 28 .and is provided with .aperturesin the sidewall thereof', headedpin 301s disposed .in said apertures or slots, andis longitudinally slideable therein. EThebrace 29, `in, the forwardportion thereof, is also: out

Y away to provide a C-shaped section 3i adaptedto receive a part of the4sta-ple driving mechanism` as herein-after more fully explained. Thefront wall 32 of the brace 29 is spaced away vfrom the front wall ofther casingy 28 to permit a staple 5 driving blade to reciprocal-,evtherebetween.

The lower rear portion .of the4 casing 2&8 is angularly slotted at `33for engagement with the pin 22A of the'A base plate 2:0.. The spring 23is de' pressed,l and the pirr212 is slid into the angular'slotl 33 sothaty the centralcasing isy adapted forpivetal movement at the pin 2.2against the spring 'ban-d 23' which normally urges thecasing 28 awayfrom the base plate 20'. The side walls of the casing 28 are cutaway at33a, and' also provided witha, longitudinal slot 33o communicating withthe cutaway portion'33a.

A magazine generally represented by the numeral 34, is pivoted to thecasing 28 by the pin 35 extending through a bracket 36 carried on theunderside of the magazine 34. The magazine 34 comprises an elongatedstaple trackway 31 of U-shaped configuration, upon which is adapted toride U -shaped staples 38.

Two spaced apart upstanding ears 39 are mounted on opposite sides of theforward portion of the staple trackway 31. Each ear 39 is provided witha slotted portion 40. The ears 39 are adapted to engage in the cutawayportions 33a, by sliding the pin 30 forwardly in the slot 33h;

The magazine 34 is locked in position by the pin'V 30 which engages inslot 48 urged by a spring as more fully described hereinafter. Itis oneofV the primary features of this inventionto have 4 mechanism isoperated, as shown more completely in Figure 2. The cam 6i limits themovement of the staple driving mechanism, to guard against its lockingin a position which would make it difficult for it to return to initialposition. The link 59 is connected at its other or lower end by a pin 62to a reciprocable staple driver comprising a head 63 carrying adepending staple engaging plunger or blade 64. The head 63 isreciprocable inthe guides formed by the notches 3l in the bracingmembers 29 as noted heretofore, While `the blade 64 is guided betweenthe ends 32 of the member 29 and the front wall of the casing 28.

YA spring wire 65 engages the pin 62 and is the magazine 34 pivoted tothecasing 28, in such a manner that the said magazine canbel'selectively removed from engagement in the casing 28 to. alleviateanyfstaple jam; orV thelikef; I

At the rear end of the trackway 31'is-disposed a pin 4I which is adaptedto cooperate with the staple-pusher means.

Figure more fully shows the staple-pusher means generally indicated bythe numeral 42, and comprising a nob.43 secured to an elongated member44, of rectangular cross-section. The member 44 is provided with anelongated slotportion 45 in the bottom wallthereof. A rider 46 isadapted to slide along the slot 45, and is secured .thereto by a headedpin 41 which extends through the slot 45 and engages a rsleeve 48 ofinverted U configuration. The sleeve 48 is adapted to ride along thestaple trackway 31 and push the staples 38 forwardly into position forthe operation of theV staple driving mechanism.v .The rider 46 and thesleeve 48 move as a unit along the slot 45. A spring 49is secured to therider member` 46 and passes over aroller member 50 which is secured tothe front portion of the member 44 by pin 5I.

The other end of thek spring 49 lis secured to the nob 43 at theprojection 52.- If the sleeve 48 is slid toward the nob 43 tension isbuilt up inthe spring 49-to urge 'said sleeve 48.1`orwardly against thestaplesV 38 to successively deliver the staplesV to the operation ofthe' stapling driving mechanism. g v

y Mounted on the upper. portionofthe casing 28 is an actuator for thestaple driving mechanism herein shown as a channelshaped element or handlever 53 pivotally secured to the casing-by apin 54 for limited relativemovement with ref-- erence to said casing 28. In the forward portion ofthe element 53 is mounted a roller 55 which is secured to the side Wallsof the element 53 by thev pin 56. -The element 53, like the casing 28 isrectangular in cross-sectional area and is adapted to engage `over-thecasing 28 to carryv the roller 55 into operative position relativeto'th'e staple driving mechanism which willnow be more fully explainedin detail.

Referring to Figure 1,in the forward portion of the casing 28 isdisposed a double link 51which constitutes one element of a toggle jointand which. is pivoted to the side walls of the casing 28 by a pivotpin58. The double link 51 com'- prises two spaced links, each of whichabuts .a side inner wall of the casing 28. A third link 59 constitutingthe other element of the toggle joint is pivotally securedbetween thedouble links 51 bythe pin 60. The link 59 has a cam portion 6Iv whichmoves toward the inner side of the front wall of the casing 28`whenthestaple driving wound around a pin 66 carried by the casing 28 andthen extending downwardly across the notch 33D. There-are two springwires 65 each of which urges the blade 64 and associated elements of4-the staple driver upwardly from the anvil 25 and normally maintainsthem in a retracted position. In this position the toggle' links 51 and59 are swung into the position shown in Fig. 1 of the drawings. f

`The spring wires 65 additionally cooperate in locking the magazine 34in position within the `casing 28. The pin 30 is moved against thetension of the spring wires 65 and the magazine 34 is positioned so thatthe notched portion of the ears 39 coincides with the slot 33h. In thisposition,V the pin 36 isurged by the spring wires 65 into the notch 46,to removably lock the magazine 34 within the casing 28.

In the operation of the staple driving mechansm, pressure 'is `appliedto the front endof hand lever 53 rocking it downwardly, which causes thevroller 55 to engage the double link Y51 and swing it forwardly aboutits pivot point 58. The movement of the double link 51 is transmittedthrough the link 59 to the head 63, which moves downwardly, sliding incutaway portion 3| of the member 29. The downward movement of the head63 carries the blade 64 downwardly to engage the foremost one of thestaples 38 on the trackway 31 which has been pushed into operativeposition by the staple-pusher sleeve 48.

The downward movement of the blade 64 carries with it a staple whichpierces a, paper P which vis positioned on the anvil member 25 to insurean ellicient stapling. The staple is bent into paper locking position ingroove 26. After the staple engages through'the paper P, pressure isreleased from the hand lever 53 and the spring wires 65 automaticallyreturn the staple driving mechanism to its initial position, and thestaplepusher means automatically again urges the staples forwardly inthe magazine 34 for another operation by the staple driving mechanism.

The staple-pusher 42 is provided at the rear krend thereof, and on theunder side thereof suboperative relation with respect to the magazine34. The engagement of the hook 61 over-the pin 4i keeps thestaple-pusher in such a position that the spring 49 continuously urgesthe sleeve 48 forwardly in the magazine 34 to push staples: 38 forwardlyinto operative position relative to the staple drivingV mechanism.

To remove the staple-pusher 42 from the staple magazine 34 it is onlynecessary to push the knob 43 slightly forward against the forceexertedA thereon by the spring 49 acting through the rider 46 and sleeve48`against the staples 38 on the asie-,ece

trackway. The pusher is thus rocked upwardly untilr the hook 6l is freeof pin 4l whereupon it may be withdrawn from the staple magazine 3d.

When it is desired to ll the staple magazine 34 with staples, or thelikethe staple magazine 34 is disengaged from the casing 28 by pushingthe pin SQ forwardly into the slot 33o against the tension of the springwires '65. The m'agan zine 3d can then be pulled away from the casing28, as it is pivoted at 35,.

The staples 3.8 may then be disposed on the staple trackway 3T and n themagazine 34 put into position within the casing 2,3 by again moving thepin 36 forwardly in the slot 33h and bringing slot d coincidenttherewith, and allowing the spring wires 55 to push f the: Pin 3B intothe Slot Mito lock the magazine 3.4, in, position.4

The staple-pusher t2 is then put into operative position by sliding thesleeve i8 along the trackway 37 until it abuts staples 38. More or lessstaples 38 may be employed, as the sleeve Q3 4has a considerable rangeof movement against the tension of spring 49.

The staple-pusher 42 is then locked into positionby engaging the hook 6lover the pin di,

with the tension of the spring 49 keeping the sleeve 48 continuouslyurging staples 38 forwardly in the magazine 3d.

While the invention as herein illustrated and described is embodied in adevice for feeding and driving substantially U-shaped staples, it is tobe understood that it may be modified in construction to feed and drivefasteners of other types. Therefore, the term staple as employed in thedescription of the invention, is intended to inl for driving staplesdisposed within said casing...

comprising, two spaced apart links pivotally secured at one end thereofto the side walls of said casing, a third link pivotally secured at oneend thereof between said two spaced apart links, and having a camportion which limits the pivotal movement of said links by engaging theinner side of the front wall of said casing, a pin secured to said thirdlink at the other end thereof, said pin being secured to a reciprocablehead, and a staple engaging blade movable with said head.

2. In a stapling device, a hollow casing, means for driving staplesdisposed within said casing comprising, two spaced apart links pivotallysecured at one end thereof to the side walls of said casing, a thirdlink pivotally secured at one end thereof between said two spaced apartlinks and having al cam portion which limits the pivotal movement ofsaid links by engaging the inner side of the front Wall of said casing,a pin secured to said third link at the other end thereof, said pinbeing secured to a reciprocable head, a staple engaging blade movablewith said head, and spring means normally urging the said cam portion ofsaid third link away from said front wall of said casing.

3. In a stapling device, a hollow casing, a top portion for Said casingand pivotally secured at the rear end thereof and adapted for limitedindependent movement relative thereto, a roller journaled in the sidewalls of said hollow casing for cooperation with staple driving means,said means for driving -staples disposed within said casing comprising,two spaced apart links pivotally secured at one end thereof to the SideWalls of said casing, a third link pivotally secured at one end thereof`between said two spaced apart links, and having a projection whichlimits the pivotal movement of said links by engaging the inner side ofthe front wall of said casing, a pin secured to said third link at theother end thereof, said pin being secured to a reciprocable head, and a'staple engaging blade movable with said head.

4. In a stapling device, a hollow casing, a top portion for said casingand pivotally secured at the rear end thereof and adapted for limitedindependent movement relative thereto, a roller journaled in the sidewalls of said hollow casing for cooperation with staple driving means,said means for driving staples disposed within said casing comprising,two spaced apart links pivotally secured at one end thereof to the sidewalls of said casing, a third link pivotally secured at one end thereofbetween said two spaced apart links, and having a projection whichlimits the pivotal movement of said links by'engaging the inner side ofthe front wall of said casing, a pin secured to said third link at theother end thereof, said pin being Secured to a reciprocable head, and astaple engaging blade movable with said head, and spring means normallyurging the said projection of said third link away from said front wallof said casing. k

5. In a stapling device, in combination, a hollow casing, a stapledriver supported and guided for reciprocation in said casing, a magazinein said casing for supplying staples to said driver, said magazine beingpivotally supported for swinging movement out of the casing and awayfrom said driver to provide access thereto for clearing away jammedstaples, latch means for releasably holding said magazine immovable withrespect to said casing, and spring means common to said driver and saidlatch means for yieldably urging the driver toward a retracted positionand the latch toward latching position.

6. In a staple driving device, in combination, a hollow casing, a stapledriver supported and guidedfor reciprocation in said casing, actuatingmeans for said driver including a hand lever pivotally Supported on the"upper portion of said casing, a pair of pivotally interconnected linksY disposed in said casing between said hand lever and said driver, oneof said links being pivotally secured to the casing and the other ofsaid links being pivotally secured directly to said driver, spring meansyieldably urging said driver to a retracted position, and means operableby said hand lever for actuating said links to impart a staple drivingmovement to said driver.

7. In a staple driving device, in combination, a casing, a staple driversupported in sad casing for reciprocation, means for feeding asuccession of staples into operative relation to said driver, springmeans normally holding the driver in `a retracted position, a togglejoint connected directly between said driver and said casing, anactuating member mounted on said casing t0 swing about an axis spacedsubstant'ally from said toggle joint, and means carried by said memberengageable with said toggle joint incident to the downward swinging ofthe member for imparting staple driving movement to said driver.

8. In a staple driving device, in combination, a casing, a staple driversupported in said head for reciprocation, means for feeding a successionof staples into operative relation to said driver, spring means normallyholding the driver in a retracted position, a toggle joint connecteddirectly to said casing and said driver, a hand lever pivotallysupported on said casing, Aand cam means operable upon depression ofsaid hand lever for actuating said toggle joint to impart a stapledriving movement to said driver.

9. In a staple driving device, in combination, a reciprocable stapledriver mounted at one end of the device, means for feeding a, successionof staples into operative relation to said driver, means normallyholding said driver in retracted position, actuating means for advancingsaid driver comprising a toggle joint interposed directly between thedriver and the stationary part REFERENCES CITED The following referencesare of record in the le of this patent:

5 UNITED STATES PATENTS Number Name Date 1,441,474 Anderson Jan. 9, 19231,687,871 Maynard Oct. 16, 1928 1,983,397 Polzer Dec. 4, 1934 102,073,819 Vogel Mar. 16, 1937 2,202,259 MacDonald May 28, 1940 2,232,016Walker Feb. 18, 1941 2,240,911 Polzer May 6, 1941 2,251,833 Polzer Aug.5, 1941 15 2,281,198 Maynard Apr. 28, 1942 2,342,818 Polzer Feb. 29,19442,347,568 Kunert Apr. 25, 1944 2,427,028 Spencer Sept. 9, 1947 20FOREIGN PATENTS Number Country DateV 616,569 France Oct. 30, 1926

